67 lines
2.5 KiB
Java
67 lines
2.5 KiB
Java
/*
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* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package gc.g1.unloading.check;
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import java.util.*;
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/**
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* This is the storage for assertions. Here assertions are stored until required number of garbage collections happen.
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* This container isn't thread-safe.
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*/
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public class AssertionContainer {
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private SortedMap<Long, List<Assertion>> sortedMap = new TreeMap<>();
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/**
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* Enqueue assertion to storage.
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* @param assertions
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* @param gcCounter - gc counter value as of assertion created
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*/
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public void enqueue(Collection<Assertion> assertions, Long gcCounter) {
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if (sortedMap.get(gcCounter) != null) {
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sortedMap.get(gcCounter).addAll(assertions);
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} else {
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List<Assertion> newList = new LinkedList<>();
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newList.addAll(assertions);
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sortedMap.put(gcCounter, newList);
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}
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}
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/**
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* Get assertions that are ready for check. That means they where created when gc counter was less then
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* specified value.
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* @param bound - value of gc counter
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* @return - collection of assertions. It can be empty if no assertions are mature yet.
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*/
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public Collection<Assertion> getElder(Long bound) {
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Collection<Assertion> returnValue = new LinkedList<>();
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SortedMap<Long, List<Assertion>> filteredView = sortedMap.headMap(bound);
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for (Long l : filteredView.keySet()) {
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List<Assertion> list = filteredView.remove(l);
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returnValue.addAll(list);
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}
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return returnValue;
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}
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}
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